Calculate84 vs Athena Network
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculate84
This app offers a modern graphing calculator experience on your iPhone. It features fast, interactive touch-screen graphing, scrollable windows, and intelligent error messages for a more intuitive user experience. Designed to be a usable alternative to physical graphing calculators.
- Fast, interactive touch-screen graphing
- Scrollable windows
- Intelligent error messages
- Intuitive interface
- Designed for TI-84 users
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Graphing made for iPhone Calculate84 brings the graphing calculator experience to iPhone with a fast, touch-friendly design. What you can do: • Plot and explore graphs with smooth touch controls • Find familiar calculator functions quickly • Scroll naturally through equations and results • Get clearer, more helpful error messages • Send feedback directly from the app Why we built Calculate84 We relied on graphing calculators ourselves and wanted an app that felt easier to use on a modern phone. Before launch, we worked with students to refine the experience, and we continue improving it based on user feedback. Send feedback Tap the red Feedback button in the app. Terms of Use (EULA): https://calculate84.com/terms-of-use
Athena Network
Easily browse college courses, plan your academic schedule, and discover campus events. Build a custom profile and explore campus happenings. Designed for students at participating institutions.
- Browse course catalogs
- Plan academic schedules
- Add classes and events to calendar
- Explore campus Discover Page
- Build custom user profiles
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Athena is the easy way to browse through courses, plan your schedule, and explore what's happening on campus. · Browse the whole 5C catalog · Add classes or custom events to your calendar · Explore and add posts on the Discover Page · Build your custom profile *Only for Claremont College students (More colleges coming soon!)
Screenshots
Verdict
The clearest difference is rating: Calculate84 at 4.8 against Athena Network's 4.0. Calculate84 also leads on ratings volume (54K vs 12) and chart position (#99 vs unranked). Athena Network's advantage is in-app purchases (none vs 6) and ads (none vs shown). On price, review sentiment, update cadence and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Calculate84 sells 6 in-app purchases, starting at $2.99 per month. Athena Network asks for nothing beyond the download.
Calculate84 holds the better App Store score, 4.8 against 4.0. That said, the two scores are not equally well evidenced: Calculate84 has 54K ratings behind it against 12, so its average is the more settled of the two. Written reviews point the same way: 75% of Calculate84's written reviews are positive against 67% of Athena Network's.
Calculate84 ships an update fortnightly, Athena Network every 3 weeks. The most recent releases landed on October 30, 2026 and October 11, 2026 respectively.
| Parameter | Calculate84 | Athena Network |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (54K ratings) — better | 4.0 (12 ratings) |
| Positive reviews | 74.6% of reviews — better | 66.7% of reviews |
| Number of ratings | 54K — better | 12 |
| Update frequency | Fortnightly — better | Every 3 weeks |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Best chart rank | #99 — better | — |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 18.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 71 MB | 24 MB |
| Age rating | 12+ | 12+ |
| Developer | Century Light LLC | Ammar Fakih |
Customer experience
Calculate84
Athena Network
Bugs and requests
Calculate84
Reported bugs
4 issues- Crashes when using 2-sample T/Z interval functions
- Incorrect results for inverse trig functions
- Issues with graphing parabolas and tracing points
- Regression equation not displayed correctly
Requested features
5 requests- Add TVM solver functionality
- Implement more regression types
- Allow disabling of ads for free users
- Restore previous purchase benefits
- Optimize for mobile experience instead of emulating physical calculator
Athena Network
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Calculate84
- Monthly Pro Subscription3 Days trial$2.991 Month
- Annual Pro Subscription7 Days trial$6.991 Year
- Lifetime Subscription$6.99
- Lifetime Subscription$9.99
- Lifetime Subscription$12.99
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- Lifetime Pro Subscription$29.99
Athena Network
No in-app purchases
Questions
Is Calculate84 free?
Is Athena Network free?
Which has better reviews, Calculate84 or Athena Network?
Do Calculate84 or Athena Network have ads?
Which is updated more often, Calculate84 or Athena Network?
Other comparisons
